This page explains how Eric Purwaka (USATT# 926315)'s rating went from 1121 to 1116 at the Austin Table Tennis League event from 10 Jan 2018. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.